John,
this may not particularly help you, but on your ganglia server
I would try netcating localhost and checking out TN numbers for a start.
e.g.
nc localhost 8651 | grep 'HOST NAME'
and check out TN values, or maybe just wc the above to see if the data
is always coming in properly. Do the same sort of thing on your headnode
or 1 of the nodes if multicast (port 8649).
Some other steps include editing gmetad.conf so that only a single
cluster
and a single host is mentioned for the data source, and if desperate try
using unicast instead of multicast.
regards,
richard
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of john
allspaw
Sent: 23 May 2006 16:10
To: [email protected]
Subject: [Ganglia-general] very annoying issue with jittery cluster
graphs
Hello there -
I'm attaching two graphs from the grid view of my ganglia install, load
and memory. The cluster has 24 nodes, and the individual
nodes don't drop in or out as the graphs are showing, all of their
individual graphs look normal.
Anyone have any idea what's going on here ?
-john
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